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A183595 1/6 the number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock containing all three values 0
6, 204, 17174, 3831324, 2220901926, 3366668183708, 13330538464876654, 137936054886331468840, 3729575155642883493035294 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A183603

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions with a(1,1)=0 for 3X3

..0..0..0....0..2..1....0..1..0....0..2..0....0..2..0....0..2..0....0..0..1

..1..2..1....2..1..0....2..0..2....1..0..1....1..1..1....2..1..2....1..2..1

..0..0..0....0..1..2....1..1..1....2..2..1....2..0..2....1..0..2....2..0..2

CROSSREFS

Sequence in context: A003743 A115491 A082405 * A054653 A061540 A173370

Adjacent sequences:  A183592 A183593 A183594 * A183596 A183597 A183598

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 05 2011

STATUS

approved

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Last modified June 20 07:54 EDT 2013. Contains 226422 sequences.